WO2016005175A1 - Insertion-extraction-mechanism - Google Patents
Insertion-extraction-mechanism Download PDFInfo
- Publication number
- WO2016005175A1 WO2016005175A1 PCT/EP2015/063970 EP2015063970W WO2016005175A1 WO 2016005175 A1 WO2016005175 A1 WO 2016005175A1 EP 2015063970 W EP2015063970 W EP 2015063970W WO 2016005175 A1 WO2016005175 A1 WO 2016005175A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- extraction
- driving
- force
- switching
- lever
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/127—Withdrawal mechanism
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/167—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal truck type
Definitions
- the present disclosure relates to an insertion-extraction-mechanism for a switching-device, in particular for a circuit-breaker of the draw-out type which is removably received within a medium-voltage switchgear.
- Medium-voltage switchgears which include a circuit-breaker supported by a trolley which is slidable within a compartment.
- the circuit-breaker is insertable/extractable in/from the compartment so as to engage/disengage movable contacts with stationary contacts provided within the switchgear.
- connection of the movable contacts to the respective stationary contacts is achieved according to different possible types of connection as described in the following.
- a first type of connection bolts and nuts are used to mutually fasten the movable and stationary contacts.
- a first type of connection proves to perform in a quite satisfying way as far as reliability and safety requirements are concerned owing to the rather simplified structural configuration, such a type of connection is undoubtedly rather wearisome and time-consuming to be established.
- the screwing operations take a long time and particular procedures are required for controlling the correct tightening torque of each nut-bolt pair and for controlling the correct alignment between movable and stationary contacts.
- a second and third types of connection are also known which are based on so-called tulips- contacts and on so-called pliers-contacts respectively.
- a worm- screw-mechanism drivable by a crank-handle is associated with these types of connection for inserting the circuit- breaker in an operative connection position and for extracting it in a non-operative disconnection position.
- the tulips-contacts and the pliers-contact provide a connection/disconnection procedure which is faster and easier to perform compared with the use of nuts-bolts.
- circuit breaker has the advantages provided by a simplified structural configuration and by a quick-coupling-configuration, however a rather high physical effort is required to the operator in order to overcome the elastic-clamping- resistance which is opposed by the movable and stationary contact during reciprocal engagement/disengagement.
- elastic-clamping-resistance may be such as to require a contemporary intervention of two operators.
- an insertion-extraction-mechanism for inserting/extracting a switching-device in/from a switchgear comprising:
- displacing-means configured for exerting on said switching-device a force so as to move in a first direction movable contacts of said switching-device with respect to stationary contacts of said switchgear
- driving-lever- means configured for operating, through an external-driving- force, said displacing-means
- said driving-lever-means being further configured for exerting on said switching-device, upon an external-motion-force, a respective force so as to move in a second direction, opposite said first direction, said movable contacts with respect to said stationary contacts.
- an insertion-extraction-mechanism which is structurally simple, safe, reliable and which requires minimal external force to be operated for achieving the insertion/extraction of a switching-device in/from a switchgear, thus drastically simplifying the task to an operator.
- the present disclosure also encompasses an electric switchgear, equivalently called with the term panel or cabinet or switchboard, comprising an insertion-extraction-mechanism as defined in the related appended claims and described herein, and also including a switching-device, in particular a circuit-breaker.
- Figure 1 is a perspective fragmentary view of a switchgear including a circuit-breaker and an insertion-extraction-mechanism according to the present disclosure
- Figure 2 is an enlarged detail of Figure 1, in which a driving-lever of the insertion- extraction-mechanism is arranged in an extraction-operative-configuration, and in which pushing-protrusions and a blocking-protrusion included in the insertion-extraction- mechanism are visible;
- Figure 3 show the driving-lever of the insertion-extraction-mechanism in an insertion- operative-configuration
- Figure 4 is a fragmentary view showing part of the insertion-extraction-mechanism, where the circuit-breaker and other components of the switchgear have been removed for better clarity;
- Figures 5 and 6 are a perspective view and an exploded view respectively of the insertion- extraction-mechanism without the driving-lever;
- Figure 7 show the driving-lever of the insertion-extraction-mechanism
- Figures 8 and 9 are a side view and a front view respectively of the insertion-extraction- mechanism in which the driving lever is shown in a rest-configuration;
- Figure 10 is a rear- view showing, from the bottom, the pushing-protrusions included in the insertion-extraction-mechanism
- Figure 11 is an enlarged detail of Figure 8.
- Figure 12 is a top-view of the insertion-extraction-mechanism with the driving lever in the rest-configuration
- Figure 12A is a fragmentary top-view of the insertion-extraction-mechanism with the driving lever in the extraction-operative-configuration like in Figure 3;
- Figure 13 shows in detail a portion of the driving-lever in the rest-configuration
- Figures 14, 15, 16, 17 are a perspective view, a rear view, a side view and a top view respectively of a front portion of the insertion-extraction-mechanism;
- Figure 18 is a perspective view, from the internal side, of the front portion of Figure 14;
- Figures 19 to 32 are different views showing the insertion-extraction-mechanism in different operative configurations, in particular:
- Figures 20, 21 show the driving-lever in a first position of an extraction-operative- configuration in which the circuit-breaker is about to be extracted;
- Figure 22 is a view like Figure 21 but in which the driving-lever is not shown for enabling visibility of other hidden parts of the insertion-extraction-mechanism;
- Figures 23, 24, 25 show the insertion-extraction-mechanism with the driving-lever in a second position of the extraction-operative-configuration in which the circuit-breaker has been partially disengaged from the stationary contacts; in Figure 25 a front right wheel of the circuit-breaker-trolley has been removed for better showing a pushing-protrusion and the blocking-protrusion of the insertion-extraction-mechanism;
- Figure 26 is a view like Figure 24 but in which the driving-lever is not shown for better clarity;
- Figure 27 is another view showing the pushing-protrusions and the blocking-protrusion of the insertion-extraction-mechanism in the second position shown in Figures 23-25;
- Figures 28, 29, 30 show the insertion-extraction-mechanism with the driving-lever in a final position of the extraction-operative-configuration in which the circuit-breaker has been completely disengaged from the stationary contacts;
- Figure 31 is a view corresponding to Figure 29 but not showing the driving-lever
- Figure 32 shows the pushing-protrusions and the blocking-protrusion of the insertion- extraction-mechanism in the final position of the extraction-operative-configuration, where it can be see the blocking-protrusion completely disengaged from a front wheel-axle of the circuit-breaker-trolley.
- an insertion-extraction mechanism 1 is shown, which is particularly suitable to be used in the Medium Voltage field, where, for the purposes of the present application, the term medium voltage refers to applications in the range from lkV up to some tens of kV, e.g. 24 or 36 kV.
- the insertion-extraction mechanism 1 is suitable for being mounted in a switchgear 3 including a switching device 2, and is usable for noticeably facilitating the insertion/extraction of such a switching- device 2 in/from the switchgear 3.
- the switching device 2 in particular comprises a circuit breaker 2 which can be extracted from a compartment 15 of the switchgear 3 for enabling maintenance and/or installation interventions.
- circuit breaker 2 - for the secondary-power-distribution - of the type which is supported by a trolley 38 that can move from an extraction position with respect to a switchgear 3, in which movable contacts 7 provided on the circuit-breaker 2 are disengaged from stationary contacts 8 of the switchgear 3, to an insertion position within the switchgear 3, in which the movable contacts 7 engage with the stationary contact 8.
- a considerable advantage is derivable from using said insertion-extraction-mechanism 1 in connection with a switchgear 3 in which the movable contacts 7 and the stationary contacts 8 reciprocally engage/disengage through quick-type-clamping-connections, such as a pliers-connection.
- This type of connection opposes an elastic -clamping-resistance during a reciprocal engagement/disengagement of the stationary 8 and movable 7 contacts and the insertion- extraction-mechanism 1 enables an operator to easily overcome such an elastic-clamping- resistance.
- the insertion-extraction-mechanism 1 comprises displacing-means 4, 14 configured for exerting on the circuit breaker 2 a force 5 so as to move in a first direction 6 the movable contacts 7 relative to the stationary contacts 8.
- the insertion-extraction-mechanism 1 also comprises a driving-lever 9 configured for operating the above-mentioned displacing- means 4, 14 owing to an external-driving-force 12 which can be imparted by an operator.
- the displacing-means 4, 14 are configured for shifting the circuit-breaker 2 in an extraction direction 6, and for exerting on the circuit-breaker 2 such an extraction-force 5 as to disengage the movable contacts 7 from the respective stationary contacts 8.
- the driving-lever 9 is also configured for exerting on the circuit-breaker 2, upon an external-motion-force 13 which can be imparted by the operator, a respective force 10 so as to move the movable contacts 7 relative to the stationary contacts 8 in an insertion- direction 11.
- the driving-lever 9 is thus adapted for being used for two different operative purposes, i.e. for the extraction and the insertion respectively of the circuit-breaker 2 from/in the switchgear 3.
- the driving-lever 9 engages with a portion 24 of the insertion-extraction-mechanism 1, better described later on, and drives the displacing- means 4, 14 in order to extract the circuit-breaker 2 from the switchgear 3.
- the driving-lever 9 is adapted for engaging with a further portion 32, 33 included in the insertion-extraction-mechanism 1 and operates for shifting the circuit-breaker 2 in the insertion-direction 11 to the inside of the switchgear 3.
- the further portion comprises a bracket-element 32, on which an engagement-slot-seat 33 is obtained, for releasably coupling with an end of the driving- lever 9.
- the bracket-element 32 is fixable to a support-structure 65 of the insertion-extraction-mechanism 1 and to a frame 37 of the switchgear 3 so as to result near a fore lateral portion of the circuit-breaker 2.
- the bracket-element 32 is fitted on the frame 37 in a position such that the engagement- slot- seat 33 substantially faces, at a relatively small distance, a wheel 70 of the circuit-breaker 2.
- the engagement-slot-seat 33 is obtained on a substantially vertical plate-wall 39 of the bracket-element 32.
- the driving-lever 9 is configured for generating, upon the above-mentioned external-motion-force 13, a much greater insertion-force 10 on the circuit-breaker 2, which noticeably reduces the physical effort required to an operator for achieving the connection of the movable contacts 7 with the stationary contacts 8.
- the displacing means comprise one or more extracting-protrusions 4 movable by the driving- lever 9 for pulling the circuit-breaker 2, upon the external-driving-force 12, to disengage the movable contacts 7 from the stationary contacts 8.
- the displacing means also comprise a transmission-shaft 14 which is rotatable along a rotation axis 19 by the driving-lever 9 and on which the extracting-protrusion/s 4 is/are provided.
- the transmission-shaft 14 is configured for rotating, upon the external-driving-force 12, from a rest-position 21, better shown in Figures 4, 5, 6, 8, 11, in which the extracting protrusions 4 are separated from the circuit-breaker 2, to a working-position 22, better shown in Figures 20 to 32, in which the extracting protrusions 4 go into contact with, and displace the circuit-breaker 2 along the extraction-direction 6.
- the extracting protrusions 4 and the transmission-shaft 14 are adapted for being arranged in the proximity of a front zone of the compartment 15 which houses the circuit-breaker 2, and the extracting protrusions 4 are configured for acting on a fore part 16 of the circuit- breaker 2.
- the transmission- shaft 14 is arranged below a support-plane 17 on which the circuit-breaker 2 slideably rests, the support-plane 17, in particular, is part of the support-structure 65 of the insertion-extraction mechanism 1, which is configured to be fitted within the switchgear 3 and connected to the frame 37 of the latter through suitable fixing means.
- the transmission- shaft 14 is positioned so that the extracting-protrusions 4, in the working- position 22 (better shown in Figures 20 to 32), go into contact with, and push a front wheels-axle 18 of the trolley 38 supporting the circuit-breaker 2, in the extraction-direction 6.
- the rotation axis 19 of the transmission-shaft 14 extends substantially horizontally and in such a way to result parallel to the front trolley- wheels-axle 18 of the circuit-breaker 2.
- the transmission-shaft 14 is rotatable around the rotation axis 19 from the rest-position 21, in which the extracting-protrusions 4 are at least partially retracted below the support-plane 17, to the working-position 22, in which the extracting-protrusions 4 project upward trough said support-plane 17 so as to reach the trolley-wheels-axle 18 to be pushed in the said extraction-direction 6 in order to pull the circuit-breaker 2 out of the switchgear 3.
- passage-slots 20 are obtained on the support-plane 17 through which the respective extracting-protrusions 4 may emerge upward and draw back downward.
- the transmission-shaft 14, holding the extracting-protrusions 4 is pivotally housed in seat- holes 42 provided on an hold-plate-element 45 (shown in detail in Figures 14 to 18).
- the hold-plate-element 45 is intended to be connected to the support-structure 65 of the insertion-extraction mechanism 1 and to be fixed to the frame 37 of the switchgear 3 for example by suitable screw-means.
- the hold-plate-element 45 comprises a front-plate- portion 43, intended to be arranged transversely with respect to the insertion 11 and extraction 6 directions, and side-plate-portions 44, which extend transversely to the front- plate-portion 43 and on which there are obtained the seat-holes 42.
- the displacing means 4, 14, include elastic-means 23, such as one or more springs 23, which connect a base-portion 60 of extracting-protrusions 4 to the support- structure 65 of the insertion-extraction mechanism 1.
- the elastic-means 23 are arranged for urging the transmission- shaft 14 and the extracting-protrusions 4 to the above-described rest-position 21.
- the transmission-shaft 14 comprises a tang-end 24 shaped for engaging with a coupling- opening 25 provided near a first end-zone 26 of the driving-lever 9. Reciprocal engagement of the coupling-opening 25 with the tang-end 24 enables movement of the driving-lever 9 to be transmitted to, and transformed into rotation of, the transmission-shaft 14.
- the driving-lever 9 has a second end-zone 27, opposite the first-end zone 26 and shaped for acting as a handle 27 to be grasped by an operator for imparting the external- driving-force 12 for extracting the circuit-breaker 2.
- the coupling-opening 25 is separated from the second end-zone 27, by an arm-distance Dl which is greater than a further arm- distance D2 of the rotation axis 19 from a contact- zone 30 in which the extracting- protrusions 4 touch and push the wheels-axle 18 of the circuit-breaker 2.
- the driving-lever 9 and the displacing-means 4, 14 cooperate and act as a force-multiplying-group: the external-driving-force 12 applied on the driving-lever 9 turns into an extraction-force 5 acting on the wheel-axle 18 which is much greater than the external-driving-force 12, thus noticeably facilitating, to an operator, disengagement of the movable contacts 7 from the stationary contacts 8 during extraction of the circuit-breaker 2.
- the driving-lever 9, shown in detail in Figures 7, 12, 12A, 13, may have a rectangular cross-section.
- the driving-lever 9 includes at an end an engagement-notch 31 shaped for releasably engaging with the engagement-slot-seat 33 of the of the bracket-element 32.
- a fulcrum- contact-zone 61 is defined about which the driving- lever 9 is pivotable, as indicated by the arrow 62 in Figure 12A, under the external- motion-force 13 for pushing the circuit-breaker 2 into the compartment 15.
- the driving-lever 9 is adapted for going into contact with, and pushing the wheel 70 of the circuit-breaker 2 in a contact-zone 36, as shown in Figure 12A.
- the driving-lever 9 comprises, at an opposite end with respect to said the engagement- notch 31, at a distance B therefrom, a handle-portion 35 which can be grasped by an operator for imparting the external-motion-force 13 in the insertion-direction 11.
- the external-motion-force 13 acting on the handle-portion 35 is at an arm-distance B' from the fulcrum-contact-zone 61 which is much greater than a further arm-distance A of the fulcrum-contact-zone 61 from the contact- zone 36 of the driving-lever 9 with the wheel 70.
- the insertion-force 10 acting on the wheel 70 is magnified with respect to the external-motion-force 13 exerted on the handle-portion 35.
- the driving-lever 9 engaged with the engagement-slot-seat 33 defines a leverage system, in particular acts as a second class lever, which amplifies a small input force (i.e. the external-motion force 13) for providing a greater output force (i.e. the insertion-force 10).
- the insertion-extraction-mechanism 1 further comprises blocking-protrusion-means 40 (shown in detail in figures 14 to 18), movable by the displacing means 4, 14 from a blocking-position 71, in which the blocking-protrusion-means 40 block movement of the circuit-breaker 2 for preventing extraction thereof from the switchgear 3, and a releasing- position 72 in which the blocking-protrusion-means 40 are retracted in a spaced apart position from the circuit-breaker 2 for enabling extraction of the latter from the switchgear 3.
- blocking-protrusion-means 40 shown in detail in figures 14 to 18
- the insertion-extraction-mechanism 1 further comprises blocking-protrusion-means 40 (shown in detail in figures 14 to 18), movable by the displacing means 4, 14 from a blocking-position 71, in which the blocking-protrusion-means 40 block movement of the circuit-breaker 2 for preventing extraction thereof from the switchgear 3, and a releasing- position 72 in which the blocking-
- the blocking-protrusion-means comprises a blocking-protrusion 40 obtained on a rocking-arm-element 41 which is hinged to the hold-plate-element 45 so as to be able to pivot about a substantially horizontal hinge-axis 51 from the blocking-position 71 to the releasing-position 72.
- the blocking-protrusion 40 may emerge above the support-plane 17 through an opening 53.
- the rocking-arm-element 41 is elastically connected to a side plate-portion 44 of the hold- plate-element 45 by elastic means, such as a spring 50.
- the spring 50 acts for urging the rocking-arm-element 41, and therefore the blocking protrusion 40, in the blocking-position 71.
- the rocking-arm-element 41 is urged by the spring 50 against a stop-seat 49 provided in the hold-plate-element 45.
- the rocking-arm- element 41 is provided with a follower-pin 46, adapted for being displaced by the displacing-means 4, 14 to the releasing-position 72 when the displacing-means 4, 14 rotate for extracting the circuit-breaker 2 from the switchgear 3.
- the follower-pin 46 is displaceable downward by the base-portion 60 of the extracting-protrusions 4, as better visible in Figures 27 and 32.
- the follower-pin 46 is connected to the rocking-arm-element 41 by a screw 48.
- the screw 48 can run in a slot 47, of the hold-plate element 45, which define a stroke of the follower-pin 46.
- the above described blocking-protrusion 40 acts for preventing any accidental or undesired extraction of the circuit-breaker 2 from the compartment 15, thus increasing the overall safety conditions for an operator.
- the blocking action of the blocking-protrusion 40 can be removed by driving the displacing means 4, 14 through the driving -lever 9.
- the blocking-protrusion 40 may also be moved in the releasing-position 72 by acting on, and lowering the screw 48, which is accessible from the outside through the slot 47.
- the driving-lever 9 comprises a locking-portion 54 shaped for coupling with one or more hooking-protrusions 57 provided on a stationary part 56 of the insertion-extraction-mechanism 1.
- the hooking-protrusions 57 are oriented to the inside of the compartment 15, and receive a slab-zone 55 of the locking-portion 54 so as to firmly secure the driving-lever 9 in a locking position 80.
- the driving- lever 9 engages with the engagement- slot- seat 33 and with the hooking-protrusions 57.
- the driving-lever 9 In this position the driving-lever 9 is transversely arranged to the extraction-direction 6 and obstructs passage to the circuit-breaker 2 thus preventing undesired extraction of the latter from the switchgear 3. Therefore, the driving-lever 9, in addition to the first-use- configuration 28 and to the second-use-configuration 29 previously described, is also usable according to a third-use-configuration (shown Figures 12, 13, 19) in which acts as a further locking or blocking unit, thus furthermore increasing the overall safety conditions. Functioning of the insertion-extraction mechanism 1 is described in the following, starting from a configuration in which the circuit-breaker 2 is in an operative position inside the switchgear 3, i.e. with the movable contacts 7 engaged with the stationary contacts 8.
- the driving-lever 9 is arranged in the locking position 80.
- the driving-lever 9 once removed from the hooking protrusions 57 and from the engagement-slot-seat 33, is coupled to the tang-end 24 of the transmission-shaft 14, as shown in Figure 20.
- the driving-lever 9 is rotated as indicated by the arrow 63 by application of the external-driving-force 12, thus driving the extracting-protrusions 4 upwards, and simultaneously driving the blocking-protrusion 40 downwards for enabling a free passage to the trolley 30.
- the extracting-protrusions 4 progressively push the wheel- axle 18 in the extraction direction 6.
- the driving- lever 9 When the circuit-breaker 2 is to be inserted again in the operative position, the driving- lever 9 is coupled to the engagement- slot- seat 33 and is moved as indicated by the arrow 62 in figure 12A, by application of the external-motion-force 13.
- the insertion-force 10 exerted by the driving-lever 9 on the wheel 70 force the circuit-breaker 2 to shift inside the compartment 15, and the reciprocal coupling of the stationary 8 and movable 7 contacts is easily achieved.
- the driving-lever 9 may be put back in the locking position 80 of Figure 19.
- the insertion-extraction mechanism 1 above discussed therefore fully achieves the intended aim of providing a structurally simple technical solution which makes a switchgear highly reliable and safer and which makes the circuit-breaker- insertion/extraction procedures easier to an operator.
- the insertion-extraction mechanism 1 is susceptible of modifications or variations all within the scope of the inventive concept as defined by the appended claims; any details may be replaced with technically equivalent elements.
- One or more of the elements above described may be differently shaped and/or positioned, can be realized in one or more pieces and/or can be differently coupled or positioned, etcetera.
- the materials may be any according to the requirements and the state of the art.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Trip Switchboards (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Mechanisms For Operating Contacts (AREA)
- Portable Nailing Machines And Staplers (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU2017102688A RU2017102688A (en) | 2014-07-11 | 2015-06-22 | I / O MECHANISM |
EP15738279.7A EP3167518B1 (en) | 2014-07-11 | 2015-06-22 | Insertion-extraction-mechanism |
BR112017000608-1A BR112017000608A2 (en) | 2014-07-11 | 2015-06-22 | insertion and extraction mechanism and switchboard |
CN201580037446.4A CN106716755B (en) | 2014-07-11 | 2015-06-22 | It is inserted into drawing mechanism |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14176669.1 | 2014-07-11 | ||
EP14176669.1A EP2966739A1 (en) | 2014-07-11 | 2014-07-11 | Insertion-extraction-mechanism |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016005175A1 true WO2016005175A1 (en) | 2016-01-14 |
Family
ID=51162597
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2015/063970 WO2016005175A1 (en) | 2014-07-11 | 2015-06-22 | Insertion-extraction-mechanism |
Country Status (5)
Country | Link |
---|---|
EP (2) | EP2966739A1 (en) |
CN (1) | CN106716755B (en) |
BR (1) | BR112017000608A2 (en) |
RU (1) | RU2017102688A (en) |
WO (1) | WO2016005175A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109870093B (en) * | 2017-12-01 | 2022-04-19 | Abb瑞士股份有限公司 | Device for measuring engagement depth of moving and static contacts |
BR102020006307A2 (en) * | 2020-03-27 | 2021-09-28 | Melquisedec Francisquini | END OF SOURCE LOCK WITH HANDLE FOR CCM DRAWER |
WO2022178964A1 (en) * | 2021-02-25 | 2022-09-01 | Jst Power Equipment, Inc. | Switchgear system having truck driven shutter mechanism |
MX2023009871A (en) | 2021-02-25 | 2023-08-30 | Jst Power Equipment Inc | Switchgear system having chain driven circuit breaker and associated methods. |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5727711U (en) * | 1980-07-17 | 1982-02-13 | ||
JPH0819124A (en) * | 1994-07-01 | 1996-01-19 | Mitsubishi Electric Corp | Detaching and attaching apparatus for unit equipment |
JPH09308029A (en) * | 1996-05-17 | 1997-11-28 | Mitsubishi Electric Corp | Drawer-type apparatus installation frame and switchboard |
WO2013168300A1 (en) * | 2012-05-10 | 2013-11-14 | 三菱電機株式会社 | External manipulation mechanism for internal moving devices |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100876409B1 (en) * | 2007-07-12 | 2008-12-31 | 엘에스산전 주식회사 | Draw in/out structure for cradle for circuit breaker |
-
2014
- 2014-07-11 EP EP14176669.1A patent/EP2966739A1/en not_active Withdrawn
-
2015
- 2015-06-22 WO PCT/EP2015/063970 patent/WO2016005175A1/en active Application Filing
- 2015-06-22 EP EP15738279.7A patent/EP3167518B1/en active Active
- 2015-06-22 RU RU2017102688A patent/RU2017102688A/en not_active Application Discontinuation
- 2015-06-22 CN CN201580037446.4A patent/CN106716755B/en active Active
- 2015-06-22 BR BR112017000608-1A patent/BR112017000608A2/en not_active Application Discontinuation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5727711U (en) * | 1980-07-17 | 1982-02-13 | ||
JPH0819124A (en) * | 1994-07-01 | 1996-01-19 | Mitsubishi Electric Corp | Detaching and attaching apparatus for unit equipment |
JPH09308029A (en) * | 1996-05-17 | 1997-11-28 | Mitsubishi Electric Corp | Drawer-type apparatus installation frame and switchboard |
WO2013168300A1 (en) * | 2012-05-10 | 2013-11-14 | 三菱電機株式会社 | External manipulation mechanism for internal moving devices |
Also Published As
Publication number | Publication date |
---|---|
RU2017102688A3 (en) | 2019-02-05 |
CN106716755B (en) | 2019-04-26 |
BR112017000608A2 (en) | 2019-11-12 |
EP3167518A1 (en) | 2017-05-17 |
CN106716755A (en) | 2017-05-24 |
EP3167518B1 (en) | 2018-05-23 |
RU2017102688A (en) | 2018-08-14 |
EP2966739A1 (en) | 2016-01-13 |
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